云南蔗区冬春干旱、夏秋气候炎热、雨量充沛,干旱有利于病菌在田间的积累,高湿有利于病菌的萌发和侵染。尤其大旱之后的多雨小气候,高温高湿,眼斑病、黑穗病、褐条病、稍腐病、锈病等病害极易发生流行。因此,要积极采取综合防治措施,有效防止长期干旱后引起的甘蔗病害暴发流行 Winter and spring drought in Yunnan sugarcane, summer and autumn hot climate, abundant rainfall, drought is conducive to the accumulation of bacteria in the field, high humidity is conducive to the germination and infection of germs. In particular, after a drought of the rainy microclimate, high temperature and humidity, eye spot disease, smut, brown disease, rot, rust and other diseases prone to epidemics. Therefore, we must take active measures to prevent and control the outbreak of sugarcane diseases caused by long-term drought